<template>
    <div class="list" ref="wrap">
        <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="button-list">
                    <div class="button-wrap">
                        <div class="button">{{ city }}</div>
                    </div>
                </div>
            </div>
            <div class="area">
                <div class="title border-topbottom">热门城市</div>
                <div class="button-list">
                    <div class="button-wrap" v-for="item in hotCities" :key="item.id">
                        <div class="button" @click="handleCityClick(item.name)">{{ item.name }}</div>
                    </div>
                </div>
            </div>
            <div class="area" v-for="(item, key, index) in cities" :key="index" :ref="key">
                <div class="title border-topbottom">{{ key }}</div>
                <div class="item-list">
                    <div class="item border-bottom" v-for="city in item" :key="city.id" @click="handleCityClick(city.name)">
                        {{ city.name }}
                    </div>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
import BScroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'

export default {
  name: 'CityList',
  props: {
    hotCities: Array,
    cities: Object,
    letter: String
  },
  computed: {
    ...mapState(['city'])
  },
  methods: {
    ...mapMutations(['changeCity']),
    handleCityClick (city) {
    //   this.$store.commit('changeCity', city)
      this.changeCity(city)
      this.$router.push('/')
    }
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  },
  mounted () {
    this.scroll = new BScroll(this.$refs.wrap)
  }
}
</script>

<style lang="stylus" scoped>
.border-topbottom
        &:before
            border-color #ccc
        &:after
            border-color #ccc
.border-bottom
    &:before
        border-color #ccc
.list
    overflow hidden
    position absolute
    top 1.58rem
    left 0
    right 0
    bottom 0
    .title
        line-height .54rem
        background-color #eee
        padding-left .2rem
        color #666
        font-size .26rem
    .button-list
        overflow hidden
        padding .1rem .6rem .1rem .1rem
        .button-wrap
            float left
            width 33.33%
            .button
                margin .1rem
                padding .1rem 0
                text-align center
                border .02rem solid #ccc
    .item-list
        .item
            line-height .64rem
            padding-left .2rem
</style>
